Remove redundant includes from stlink-sg.c
Remove redundant includes from stlink-sg.c

Not sure why those were here. Probaly leftovers after refactoring?

braincorp/stlink,chaosAD/stlink,braincorp/stlink,simonjwright/stlink,gtalusan/stlink,trigrass2/stlink,fedorcomander/stlink,trigrass2/stlink,swegener/stlink,gtalusan/stlink,simonjwright/stlink,chaosAD/stlink,fedorcomander/stlink,swegener/stlink